The GXSC analog-to-digital converter replaces the AD7874 for filter applications

The filter is a key component in signal processing, capable of selectively passing signals at specific frequencies while suppressing those at other frequencies, thereby purifying and processing the signals. For instance, in communication systems, a bandpass filter allows signals within a specific frequency range to pass smoothly while blocking interfering signals from other frequency ranges, ensuring the accuracy and stability of communication. High-precision analog-to-digital converters can accurately transform the analog signals processed by the filter into digital signals, providing reliable data support for subsequent digital signal processing.

The GXSC 4-channel 12-bit 50kSPS synchronous sampling analog-to-digital converter is pin-to-pin compatible with the AD7874 and can be applied in filters. It features an integrated 12-bit ADC, on-chip reference voltage, on-chip clock, and four sample-and-hold amplifiers, enabling simultaneous sampling of four input channels while maintaining the phase relationship among them.

The aperture delays of the four sampling-hold amplifiers are minimal, with defined minimum and maximum limits that allow multiple chips to sample multiple input channels simultaneously without introducing phase errors between signals connected to multiple devices. The reference voltage output/input facility also enables multiple chips to be driven by the same reference voltage source. The GXSC analog-to-digital converter features a standard digital interface, facilitating connection between the device and microprocessors or DSPs.

GXSC Analog-to-Digital Converter Product Advantages:

Powered by a 5V supply, it supports conversion of true bipolar input signals of +10V.

Adopting the ceramic-sealed CDIP28 package, compatible with the imported product AD7874

Single 5V power supply, compatible with ±5V power pins for easy application

Product dimensions, pinout, and functional compatibility reference products

Better signal-to-noise ratio, higher linearity

Lower bipolar zero-level error, lower positive and negative full-scale error

Higher channel isolation

ENOB: 11.8 Bits (Typical Value)

SINAD: 73.4 dB (typical value)

SFDR: 95 dB (typical)

INL: ±0.1 LSB (typical)

DNL: ±0.1 LSB (typical)

Working power consumption: 70mW (typical value)